JSFiddle - React, Tailwind, and code Playground

HTML

<body>

 <div class="exclam">
 </div>

 </body>
 </html>

CSS

div{
 position:absolute;
 }


 .exclam{
 width:64px;
 height:105px;
 top:106px;
 left:259px;
 z-index:5;
 background:#444 url('pt-exclam.png');
 -moz-animation:bounce 10.7s linear infinite;
 }


 @-moz-keyframes bounce{
 from{top:106px;}
 10%{top:99px;}
 20%{top:93px;}
 30%{top:89px;}
 40%{top:87px;}
 50%{top:86px;}
 60%{top:87px;}
 70%{top:89px;}
 80%{top:93px;}
 90%{top:99px;}
 to{top:106px;}
 }